Re: drop tablespace error: invalid argument

Stephen Tyler <stephen@stephen-tyler.com> writes:
> On Tue, Nov 10, 2009 at 8:57 PM, Jan Otto <asche@me.com> wrote:
>>> Someone else please confirm?  If so I'll revert that patch.
>> 
>> Yes i can confirm that this bug is fixed in Mac OS X 10.6.2. I have checked
>> it twice.
>> With removed workaround in tablespace.c and with my self written testcase
>> from
>> september.

> I can confirm that I am no longer able to trigger  "ERROR:  could not read
> directory "pg_xlog": Invalid argument" in Mac OS X 10.6.2 with
> "checkpoint_segments = 128".

OK, I've reverted the hack in tablespace.c.  This is good, I was not
looking forward to providing our own implementation of readdir() :-(

> PS: I am observing some kind of disk lock-up on my machine that I can't
> explain (and is present on both 10.6.1 and 10.6.2).  Huge operations (like
> "VACUUM FULL on a 50GB table") appear to run in brief spikes of activity
> interspersed with 30 second pauses when the disk appears to be both inactive
> and somewhat unresponsive and CPU is idle.  Perhaps fsync() is misbehaving
> (I have an SSD Raid 0 array).

Maybe ktrace and/or dtrace would shed a bit of light on what's happening
there.
        regards, tom lane